Pasting mechanism for stitching machines



Jan. 2, 1934.

O. KLEINSCHMIT ET AL PASTING MECHANISM FOR STITCHING MACHINES Filed July26, 1930 4 Sheets-Sheet l 1934- 0. KLEINSCHIMIT ET AL 1,941,867

PASTING MECHANISM FOR STITCHING MACHINES Filed July 26, 1930 4Sheets-Sheet 2 zwre'nz ors: 0. h'Zehmckv Z and 0' Nil/22er- Attorney1934- o. KLEINSCHMIT ET AL v 1,941,367

PASTING MECHANISM FOR STITCHING MACHINES Filed July 26, 1930 4Sheets-Sheet 3 I71 vewZ o/w:

O MJZZ er A Z'Z'orne Jan. 2, 1934.

O. KLEINSCHMIT ET AL PASTING MECHANISM FOR STITCHING MACHINES 4Sheets-Sheet 4 Filed July 26 1930 and Patented Jan. 2, 1934 UNITEDSTATES PASTING MECHANISM son s'rrronmc MACHINES Oscar Kl'einsclimit andOskar Miiller, Leipzig Plagwitz, Germany,

assignors to Gebruder Brehmer, Leipzig-Plagwitz, Germany, a Germancompany Application July 26, 1930-, Serial No. 471,056

. and in Germany May 3th, 1930 16 Claims.

This invention relatesto blade stitching machines for books and moreparticularly concerns the mechanism by means of which paste can beapplied in the form of a strip at a point close to the foldededge of thebook signature;

The object of this invention is to provide means for supplying pasteevenly to the paste applying member and to enable the latter to apply apaste strip to the lateral edge of a folded sheet while the latter ispositioned for stitching.

According to this invention we provide mechanism wherein theadhesive-applying part is caused. to contact momentarily with anadhesivesupply roll in travelling to itsoperative position.

One embodiment of the invention is shown in the accompanying drawings,in which:

Figure 1 is aside elevation of a book stitching machine showing thepaste applying mechanism at rest. V

Figure 2 shows the mechanism in its initial operative position. V

Figure 3 illustrates the position of the mechanism when the paste stripis about to be applied to the sheet edge, while I Figure 4 is anenlarged detail View of the actual paste applying members. I

J ournalled. in the left andright handframes of the machine 1 is a maindriving shaft 2 upon which are mounted eccentrics or cams 3 and 4. Thecam 3 is adapted to actuate the blade lever 5 and; the cam dis employedfor operating a bell crank lever 6, one arm of which forms a toothedsegment; lever 60.. Both of these levers are mounted on a. shaft '7which is also journalled in the side frames of the machine. The followerroller 6b, mounted upon the second arm of the lever 6, is heldinengagement with the cam 4 by means of a tension spring 28,- the otherend of which is secured to amember 28aattached to the main frame. Thesaddle or table .8 is mounted on the blade lever 5. A paste applyingmember 9 rigidly connected to a control lever 10, which extends frornoneside thereof and'carries a roller 10a at its lower extremity, isjournalled in levers 11 which are rigidly connected to'the toothedsegment 13 through the shaft 12.

A tension spring 24 anchored atone end to the lever ll and at its otherend to the paster blade 9 is adapted to pull the latter about its pivoteither into the inoperative or final operative position (Figures 1 and4) or to the initial operative position (Fig. 2) when the lever 10 istripped as hereinafter described. These positions of the pastor bladeare predetermined by means of one of a'pair of lugs 25, 26 formedintegral with the control lever 10, which lug is caused to abut againsta-stop 2'7 provided on the lever 11, thus limiting the rotation of thepaster blade- 9 and control lever 10 about theircomrnon axis- Y A curvedguide 14 is secured on the blade lever 5 and is adapted to engage thefollower rollercarried at the end of the lever 10 and thereby toguidethe latter together with the paster 9 into the sheet pasting position. I

A pawl 15 mounted on one of the levers 11, is adapted to engage aratchet wheel 17 rigidly mounted on the spindle of a paster roller '18and thereby to rotate the latter as the lever 11 car rying the pastor 9isswung. inwards during the rotation of the cam 3. Journalled on thelever 5 is a. twovarmed locking lever 19, one down-' wardly extendingarm 19a. of which is adapted during the inoperative position of themechanism to engage a lug 20 formed on the lever '6 and to be held inengagement therewith by means of a tension spring 1% which is secured atone'end to the second horizontally extending arm of the lever19 and atthe otherend to the lever 6a. A bell crank lever 21, carrying a followerroller 21a at its lower extremity, is pivotally mounted upon the lever6c and forms the means for tripping the pastor 9 into its initialpositionwhen the-roller 21a is engaged by the extension 2212 of thelever 22. A tension spring 21b is secured between the main frame and thelever 21. in order to keep the follower roller 21w, in contact with themember 2%. The tripping lever 21 and the locking lever .19 are adaptedto be actuated simultaneously by V a throw-in lever 22 which isjournalled in the side frame 1 of the machine and preferably operated bymeans of a foot treadle 22a.

The operation of the pasting mechanism is as follows: v o

For ordinary stitching operations the signature 23 to be stitched isplaced onthe saddle table and the machine is operated by the depressionof a pedal 29, thus causing stitching of the signature in. a knownmanner. If a signature is to be strip-pasted the operation is repeatedas above but in addition to'the pedal 29, the pedal-shaped end 22d atthe lower extremity of the throw-in lever 22 by which the pasting"device is controlled must also be depressed. By depressing the lever 22the lever 21 is actuated, through the extension 22b and follower 21a,and inturn trips the control lever 10 and'the spring controlled paster 9secured thereto (Figure 2). At the same time the locking lever 19is'also released bythe throw-in lever 22 through the arm 19a engagingwith the lever 22 whereby the toothed segment lever 6a is freed and isrocked by the tension spring 28 in accordance with the curve on the cam4. The cams'continue to rotate in the direction of the arrow with theresult that the levers 11 together with the parts mounted hereon travelin upward direction through the engagement of the toothed members 6a and13. .The pawl 15 moving in an arcuate path engages with the ratchetWheel 17 thus rotating the paste roller 18 mounted on the same shaft andso causing that part of the paste roller upon which the paster 9 isabout to bear to be supplied with fresh paste. By this arrangement thepaster 9 is moved at the same speed as that at which the paste roller isrotated. It does not therefore wipe or scrape the paste roller butperforms a rolling action when in'contact thereon thereby preventing theformation of lumps and drops of paste on the blade. In its continuedmovement in-the upward direction the roller 10a of the control lever '10travels along the curved guide l'therebyrotating the paster about itsaxis until the paster 9 is in contact with the signature in ordertoapply a strip of paste thereto.

The levers 11 then immediately commenceto move again downwardly, (Fig.3). During the latter part of this motion the bladelever 5 commences tomove in upward direction thereby bringing the signature located on thetable to the stitchingmechanism where it is stitched in known manner. Bymeans of this novel device paste can be applied to every sheet but as isusual only the first and the second and the last but one and the lastsheets can be connected by a strip of paste;

' What we claim is:

1. In a stitching machine mechanism for the 2 purpose of applyingadhesive to theedge of a i means for actuating said supply roller, meansfor tripping said adhesive-applying member into one of two positions,means for operating said tripping means, means for locking the'said'supporting arms against movement and means for tripping said lockingmeans.

2. In a stitching machine as claimed in claim 1, means for controllingthe operation of said adhesive applying mechanism comprising a footpedal adapted to engage and trip said locking means and indirectly totrip said adhesive applying member. l g

3. In a stitching machine mechanism for applying adhesive to the edge ofa folded sheet, in combination, an adhesive-supply roller, a ratchetWheel mounted on said roller, a spring-held adhesive-applying member,pivotal arms rotatably supporting said adhesive-applying. member, aratchet-pawl mounted. on said supporting arms and adapted to engage saidratchet WheeLmeans for actuating said supporting arms, means for lockingsaid actuating'means against movement, means forrocking'said.adhesive-applying member. about its axis, a foot pedal forcontrolling said locking means and tripping said adhesive-applyingmember, and guiding means for guiding the said adhesive applying memberinto its final operative position during its travel to the said foldedsheet. o o

4. Ina stitching machine, mechanism for the purpose of applying adhesiveto the edge Of-a folded sheet,

means for engaging the said adhesive-applying member with theadhesivesupply member during the upward travel of the said adhesive-applyingmember. 7

5. In a stitching machine, mechanism for the purpose of applyingadhesive to the edge of a comprising an adhesive-supply member, anadhesive-applying member, means for moving the adhesive-applying membertowards the folded'sheet, means for contacting the saidadhesive-applying member with the edge of the folded sheet, means forcontacting the face of said adhesive-supply member with the face of saidadhesive-applying member during the travel of the adhesive-applyingmember towards the folded sheet, and means for moving the face of theadhesive supply member concurrently with and at the same speed as theadhesive-applying member during contact of said faces to avoid relativesliding movement between the faces.

6. In a stitching machine'mecham'sm for applying adhesive to the edge ofa' folded sheet, comprising an adhesive-container, an adhesivesupplyroller rotatably mounted in the'said container, a ratchet wheel mountedon the said roller, a spring-held'adhesive applying blade, pivotal armsrotatably supporting said adhesive-applyingblade, a ratchet-pawl mountedon said supporting arms and adapted to engage said ratchet wheel, meansfor actuating said supporting arms, means for locking said actuatingmeans against movement, means for rocking said adhesive-applying bladeabout its axis, a foot pedal for controlling said locking means androcking said adhesive-applying blade, and means forcontacting the saidadhesive-applying blade i with the requisite edge of the folded sheet.

I i 7. In a book-stitching machine, means'for applying adhesive to afolded sheet, comprising a swinging sheet carrier, an adhesive-supplymember positioned beneath'said sheet carrier, an adhesive-applyingmember adapted to rest beneath said sheet carrier, means for positioningsaid adhesive-applying'member to contact with said adhesive-supplymember, and means for swinging said adhesive-applying member upwardsinto the path of travel of said sheet carrier to contact with a foldedsheet carried by said sheet carrier. f8. In a book-stitching-machine,means for applying adhesive to the fold edge of a folded sheet,comprising a pivotal sheetcarrier, an adhesivesupply member positionedbeneathsaid sheet carrier, an adhesive-applying member adapted to restbeneathsaid sheet carrier, means for contacting said adhesive applyingmember with said adhesive-supply member, and means for swinging saidadhesive-applying member upwards into the path of travel of said sheetcarrier to contact with the'fold edge of a sheet carried by said sheetcarrier. j l I r 9. In a stitching machine, means for applying adhesiveto the fold edge of a folded sheet, comprising a pivotal sheetcarrier,'an adhesive-supply member, an adhesive-applying member,

means for contacting said adhesive-applying member with saidadhesive-supply member, means for swinging said adhesive-applying memberinto the path of travel of said sheet-carrier, and guide means mountedupon said sheet car'- rier to guide the said adhesive-applying memberinto contact with the fold edge of a folded sheet carried by the saidcarrier.

10. In a stitching machine, adhesive-applying means comprising arotatable adhesive-supply roller, a ratchet wheel carried by saidroller, a movable adhesive-applying member, means for contacting saidadhesive-applying member with said adhesive-supply roller, and a pawlcarried by said adhesive-applying member and adapted to engage saidratchet wheel thus to rotate said adhesive-applying roller so that thelatter contacts with said adhesive-applying member during contactingmovement thereof with simple rolling movement between the contactingsurfaces.

11. In a stitching machine provided with a pivotal sheet carrier, meansfor applying adhesive to a sheet carried by the sheet carrier,comprising an adhesive supply roller, a movable adhesiveapplying part,means for contacting said adhesive-applying part during movement thereofwith said adhesive-supply roller, and means for imparting movement tosaid roller during the contact thereof with said adhesive-applying partso that the contacting surfaces come together and part with simplerolling movement.

12. In a stitching machine provided with a moving sheet carrier,adhesive-applying means comprising an adhesive-supply member, anadhesive-applying member adapted to assume either of two positions,means for tripping said adhesiveapplying member into one of saidpositions to contact with said adhesive-supply roller, means for movingsaid adhesive-applying member into the path of travel of the movablesheet carrier, and guide means mounted on said carrier to guide saidadhesive-applying member into the second of the beforementionedpositions therein to contact with a sheet carried by said sheet carrier.

13. In a stitching machine, means for applying adhesive to a foldedsheet, comprising an adhesive-supply member, an adhesive-applyingmember, means for contacting said adhesive-applying member with saidadhesive-supply member, means for swinging said adhesive-applying membertowards the folded sheet to which adhesive is to be applied, and meansfor imparting a secondary movement to said adhesive-applying memberwhereby it is positioned to contact with said sheet during the swingingmovement referred to.

14. In a stitching machine, means for applying adhesive to the edge of afolded sheet, comprising an adhesive-supply member, a pivotaladhesive-applying member, means for lifting said adhesive-applyingmember upwardly towards the folded sheet, means for tripping saidadhesiveapplying member about its pivot to contact with saidadhesive-supply member, and means for imparting a further rotarymovement to said adhesive-applying member during its upward movement toposition this member in the operative position to contact with saidfolded sheet.

15. In a stitching machine, in combination, a machine drive, a sheetcarrier mounted on pivotal arms, an adhesive-container positioned belowsaid sheet carrier, an adhesive-supply member associated with saidadhesive-container, an adhesiveapplying member adapted to rest belowsaid sheet carrier and supported by pivotal arms, means-for pivotingsaid second pivotal arms to brackets secured to said sheet carrier, acurved guide strip mounted on one of said first pivotal arms, means foroscillating from said machine drive said first pivotal arms and sheetcarrier mounted thereon, and means for oscillating from said machinedrive said second-mentioned pivotal arms so that the saidadhesive-applying member is caused first to contact with saidadhesive-supply member and then toengage said curved guide strip therebyto be guided into contact with a sheet carried by said sheet carrier. I

16. In a stitching machine, in combination, a machine frame, a driveshaft, cam driving means mounted on said shaft, sheet carrier armspivoted to said machine frame, a sheet carrier mounted on the freeextremities of said arms, a curved guiding strip mounted on one of saidarms, a bracket depending from said arms, curved arms pivoted to saidbracket, an adhesive-applying bar rotatably mounted in the freeextremities of said curved arms and spring held in either of twopositions, an adhesive-supply roller,-means for oscillating said sheetcarrier arms and sheet carrier from saidcam driving means, means fortripping said adhesive-applying member into position for contacting withsaid adhesive-supply roller and means for moving said curved armsupwards, about their pivots so that the said adhesive-applying member iscontacted with said adhesive-supply roller and then engaged with saidcurved guiding strip and rotated to its second OSKAR MiiLLER.

